Hub-boring machine



(No Mode-1.) l 2 Sheets-Sheet 1.

F. B. DEMING.

HUB BORING MACHINE.

Patented Aug. 14, 1888.

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(No Model.) 2 Sheets--Sheet 2.

F. B. DBMING.

HUB BORING MACHINE. No. 887,773. Patented Aug. 14, 1888.

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UNITED STATES.

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FRANK B. DEMING, OF SALEM, OHIO.

HUB-BORINGIVIACHINE.

SPECIFICATION forming part of Letters Patent No. 387.773. dated August14, 1888.

Oliginal application tiled October 4, 1886, Serial No. 215,874. Dividedvand this application filed November l5, i887. Serial No.

To @ZZ whom, it may concern..-

Be it known that I, FRANK B. DEMINo, a citizen of the United States,residing at Salem, in the county of Columbiana and State of Ohio, haveinvented certain new and useful Improvements in Hub-Boring Machines; andI do hereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same.

The invention relates to improvements in hub-boring-maehines; and itconsists in the construction and combination of parts, as shown anddescribed, and particularly pointed out in the claims.

Referring tothe drawings, Figure l is a side elevation of the machine.Fig. 2 is a longitudinal section thereof. Fig. 3 is a longitudinalsection showing the support for the mandrel without the sleeve and alarger size of mandrel. Fig. 4 illustrates the inner end, and Fig. 5 theouter end, of the feeding-nut. Fig. 6 is a side view thereof,and Fig. 7a perspective of the parts separated. Fig. 8 is a section of awheel-clamp. Fig. 9 is a cross-section of the mandrel and bearing online at the point where the set-screw g2 is placed to hold the spline inplace. (See Fig. 1.) Fig. 10 is a plan view of the sectioned parts witha separate view of the spline at one side.

This application is a division of my application iled October 4, 1886,Serial No. 215,874, for hub-boring machine, and certain important partsare common to both cases.

A represents the frame proper of the machine, comprising the base a andthe vertical part et', of ring form, in which the head for holding thewheel is supported. Upon this frame I pivot a yoke, B, having a verticalhub, b, anda slotted extremity, b. Ashort standard, C, `fixed on theframe or base, is provided with an adjusting nut, D, that works in theslot b2 in the extremity b', whereby the angle of the hub is adjusted toregulate the taper of the bore.

D is the bearing for the mandrel, provided with a closetting spindlethat occupies the hub Z), and is held vertically adjustable therein by ahandled screw, F, passing through a loop, b3. on the yoke B. In the mainthese parts (No model.)

are similar to those described in my other application above referredto. At this point, however, I make a departure. Here I have a mandrel orcutter-shaft, G, provided with a groove, y, which is engaged by aspline, g', supported in ears d on the outer extremity of the bearing D,where a set-screw, g2, is shown for holding the spline in place. Thisprevents Vrotation of the mandrel and insures a rectilinear feed. On theinner extremity of the bearing I form a dovetailed annular groove, d',to support a sectional feed-nut, H, having a corresponding` dovetailedextension, k, at one side to engage said groove and work therein. Thisnut is formed in two parts, t' k. The part has two studs, i i', on itsmeeting face, which engage open slots or notches lo in the sidesof thepart k. A. lock, Z, having a substantially rightangled slot, Z', ispivoted on the section i', and held on the section 1c by a setsorew, m."When the lock is in the position about as seen in Fig. 5, the sectionsare brought together, and if the nut be turned When in this position itwill feed the mandrel; but if the lock be thrown so as to bring thevertical part of the slot over the set-screw my, the sections willseparate by gravity to the extent of said slot, and no feeding willoccur. The section i of the nut-bars has an arm, n, which is engaged bya nger, o, on the revolving head that carries thewheel, the hub of whichis to be bored.

In Fig. 2 I show a sleeve, o, inside the bearr ing for the mandrel, butthis is dispensed with when a larger mandrel is employed, as seen inFig. 3.

My improved clamping mechanism for the wheel is most clearly shown inFig. 8. It will be observed that the revolving head l?, set in the mainframe, has the usual arms, as p, for holding the wheel. These arms haveholes, as

at their extremities, in which are supported short screw-rods Q by meansof nuts R, screwthreaded inside to engage said rods and free to turn inthe arms, in which they are held by set-screw g entering an annulargroove, g, in the nut. This enables the rods Q, to be adjusted byturning the nuts It without themselves being turned, which is of greatadvan tage in arranging a wheel in the machine for boring. On the outerend of the short rod Q is swiveled a clamp-plate, V, and in one arm ofthis plate I have an Lshaped clamping or gripping bolt, IV, held on theinner side of the plate by a nut, w. By giving the clampplate Vsome playin its socket and swivel-connection with the rod that supports it Iadaptthe clamp to be used with wheels having staggered or uneven spokes. g

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a hub-boring machine, a yoke having a vertical hub, a bearing forthe mandrel having a spindle set in the hub and adjustable therein, amandrel, and a feednut fixed on the inner end of the bearing,substantially as set forth.

2. In a hub-boring machine, a verticallyadjustable yoke pivoted on themain frame, a bearing for the mandrel vertically adjustable in saidyoke, and a spline to guide said mandrel, in combination with a feed-nuton the inner end of the bearing, substantially as set forth.

3, In a hub-boring machine,a sectional feednut, one section having studson its meeting face and the other section having slots fitting about thestuds, and a lock pivoted on one section and having a substantially L-shaped slot and a set-screw, substantially as set forth.

4. In a hub-boring machine, a sectional feednut having studs, and slotsfor the studs, and a dovetailed groove at one end to engage the bearingfor the mandrel, in combination with a lock pivoted on one section andhaving a on one part and slots on the other part, and a lock on the nutatits outer end,constructed to clamp the nut on the mandrel, incombination with the mandrel and the bearing therefor, substantially asset forth.

6. In hub-boring machines, a clamping device consisting of aserew-rodadjustable in the arm of the revolving head, a clamp-plate pivoted onsaid screw-rod and a clamping-bolt adjustable in said plate,substantially as set forth.

7. In a hub-boring machine, a revolving head for carrying the Wheel,having arms With holes through their extremities, nuts swiveled in saidholes, and screw-rods in the nuts,with clampingplates on the outer endsof the rods and clam ping-bolts on the plates, substantially as setforth. A

8. In a hub-boring machine and combined with the revolving head forholding thewheel to be bored, swivel-nuts set into the arms of therevolving head, rods adjustable in said nuts, and clamps for holding theWheel pivotally attached to the outer extremities of said rods,substantially as set forth.

In witness whereof I hereby set my hand this 29th of October, 1887.

FRANK B. DEMING.

lVitnesses:

J. C. BOONE, C. C. SNYDER.

